Chapter 2: Fix missing "R" after 1e3e1ba067c79a when using register from insert
mode. While at it, consistently use upper case letter for CTRL-R in the
new-tutor.
related: vim/vim#18950757b42ab07
Co-authored-by: Christian Brabandt <cb@256bit.org>
1. Every hyperlink-like element was replaced by `"$1"` (where $1 is the original string showed in the hyperlink);
2. Arrows `--->` were used in lines containing practice examples when no editing text is involved;
3. Context on interactivity was minimally adapted when strictly needed, not to disrupt the original tutor's intent;
4. Tests regarding the tutor file refactored to ensure the new syntax is not flagged as an error.
This updates the new tutor with the changes from commit
b87f133b0724f7328e7dd41dd611af67f4ae3e39
closes: vim/vim#184619d57fe278f
Link to :checkhealth for clipboard support.
Co-authored-by: RestorerZ <restorer@mail2k.ru>
